Lutron Flexible AC Power Meter – CWF-3300

Lutron Flexible AC Power Meter – CWF-3300

Lutron Flexible AC Power Meter – CWF-3300

The Lutron CWF-3300 is a highly capable, flexible AC power meter designed for industrial and professional use. Featuring True RMS measurement, a wide current range up to 3000 A, and high-resolution 6000-count display, this meter delivers exceptional performance in complex electrical environments. Its advanced safety features and durable build make it an essential tool for electricians, facility managers, and energy consultants.

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Key Features Lutron Flexible AC Power Meter – CWF-3300

• True RMS Measurement
  Ensures accurate readings of AC voltage and current, even on distorted or non-sinusoidal waveforms—critical for modern industrial applications.

• Wide Measurement Range
  Measures AC voltage from 10 V to 600 V and AC current from 1 A to 3000 A, eliminating the need for additional equipment for high-range readings.

• High-Resolution 6000-Count A/D Converter
  Delivers precise measurement results with fine granularity for professional-grade accuracy.

• Full Power Measurement Capability
  Capable of measuring real power (KW), apparent power (KVA), reactive power (KVAR), and power factor (PF), all in a single device.

• Double-Insulated and Overload Protected
  Built with high-quality materials for electrical insulation and includes overload protection to safeguard both the user and the device.

• Flexible Sensor Cable
  Comes with a 300 mm long and 8 mm diameter flexible current probe that allows easy access in tight or crowded electrical panels.

• User-Friendly Design
  Features a large, easy-to-read LCD (33.5 mm x 18.7 mm), Data Hold function, automatic or manual power on/off, and polarity indication.

• Comprehensive Measurement Functions
  Supports measurements of AC voltage, AC current, KW, KVA, KVAR, power factor, resistance, and continuity (with beeper alert).

• Fast Sampling Time
  Sampling speed of approximately 0.5 to 1 second ensures responsive readings in dynamic electrical systems.

• Portable and Lightweight
  Compact design with dimensions of 290 x 135 x 27.8 mm and weighing only 208 grams (without batteries), suitable for field or lab use.

• Low Power Consumption
  Operates on two AAA (1.5V) batteries with efficient power use of approximately 25 mA.

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Technical Highlights

• AC Voltage Measurement

  • Range: 10 to 600 V AC

  • Resolution: 0.1 V

  • Accuracy: ±(0.5% + 5d)

  • Overload Protection: 750 V AC

• AC Current Measurement

  • Range: 999.9 A / 3000 A

  • Resolution: 0.1 A / 1 A

  • Accuracy: ±(1% + 8d) for 1000 A, ±(1% + 10d) for 3000 A

  • Linearity: ±0.2% of reading

  • Conductor Position Sensitivity: ±(2% + 15d)

• Power Measurements

  • Parameters: KW, KVA, KVAR, PF

  • Display Range: Up to 1800 KW/KVA/KVAR

  • Resolution: 0.1 to 1K

  • Accuracy: ±(1.5% + 20d)

  • Power Factor Range: 0.00 to 1.00

  • PF Accuracy: ±0.04

• Resistance Measurement

  • Range: Up to 20 KΩ

  • Resolution: 0.01 KΩ

  • Accuracy: ±(1.5% + 5d)

  • Overload Protection: ±350 V DC/AC

• Environmental Conditions

  • Operating Temperature: 0 to 50°C (32 to 122°F)

  • Humidity: Max. 80% RH

• Power & Dimensions

  • Power Supply: 2 x AAA (1.5V) batteries

  • Power Consumption: Approx. 25 mA

  • Flexible Cable: 300 mm length, 8 mm diameter

  • Dimensions: 290 x 135 x 27.8 mm

  • Weight: 208 g (without batteries)

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Ideal Users

• Industrial and commercial electrical technicians

• Maintenance staff needing fast and accurate diagnostics

• Energy consultants and auditors assessing power quality and efficiency

• Electrical engineering instructors and students conducting practical experiments

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Summary

The Lutron CWF-3300 Flexible AC Power Meter is a powerful, precise, and compact tool engineered for modern electrical measurement demands. With True RMS capability, a wide current range up to 3000 A, and comprehensive power analysis functions, it’s built for accuracy and safety. Its flexible sensor and rugged build allow professionals to tackle complex installations with confidence and efficiency—making it a must-have for high-level electrical measurement and diagnostics.